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3 years ago

During which process of the water cycle does water change from a gas to a liquid? A.precipitation

Chemistry

2 answers:

Helga [31]3 years ago

6 0

Answer: Option (B) is the correct answer.

Explanation:

Condensation is defined as a process in which vapor state of a substance changes into liquid state.

Precipitation is defined as a reaction in which two aqueous solutions on chemically combining with each other leads to the formation of an insoluble solid substance.

Evaporation is defined as a process in which liquid state of a substance changes into vapor state.

Transpiration is defined as a process in which plants absorb water with the help of their roots and then release water vapor through the pore present in their leaves.

Therefore, we can conclude that during condensation process of the water cycle, water change from a gas to a liquid.

madreJ [45]3 years ago

3 0

The correct answer is B.Condensation. The other person who answered this question is wrong, it is NOT A. precipitation.

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An aqueous solution of calcium hydroxide is standardized by titration with a 0.120 M solution of hydrobromic acid. If 16.5 mL of

Artist 52 [7]

Answer: The molarity of calcium hydroxide in the solution is 0.1 M

Explanation:

To calculate the concentration of base, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $HBr$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is $Ca(OH)_2$

We are given:

$n_1=1\\M_1=0.120M\\V_1=27.5mL\\n_2=2\\M_2=?M\\V_2=16.5mL$

Putting values in above equation, we get:

$1\times 0.120\times 27.5=2\times M_2\times 16.5\\\\M_2=0.1M$

Hence, the molarity of $Ca(OH)_2$ in the solution is 0.1 M.

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3 years ago

What is the name of the molecular compound CBra?

Fudgin [204]

Answer:

i think it is a Cobrotoxin

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3 years ago

The thermochemical equation for the reaction of carbon dioxide with sulfur dioxide is shown below. How can the reaction be descr

prisoha [69]

Answer: d. has high activation energy

Activation energy is the energy that a system requires to start a certain process. Also, it is the minimum energy necessary for a given chemical reaction to occur. For a reaction to occur between two molecules, they must collide in the correct orientation and have a minimum amount of energy equal to the activation energy.

As the molecules approach, their electron clouds repel, so energy is required for the collision to occur and therefore the reaction. The activation energy comes from the heat of the system, that is, the translational, vibrational energy, etc. of each molecule. However, if this energy is not enough, the reaction will not be spontaneous.

A reaction between two molecules can be favored by supplying energy to the system. In the case raised in the question, energy equal to 1104 kJ is provided to the system to favor the next reaction

CO2 (g) + 2SO2 (g) → CS2 (g) + 3O2 (g)

Since the energy equal to 1104 kJ is included in the reactants, it can be deduced that it is the energy that is provided to the system for the reaction to occur. However, from the value of this energy it can not be said whether the system is endothermic or exothermic since it is a kinetic variable and the variables of this type do not allow predicting the thermodynamic behavior of a system.

Furthermore, it can be seen that the value of this energy is considerably high, therefore the reaction described has a high activation energy.

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3 years ago

Consider the incorrectly balanced combustion equation:

Ulleksa [173]

Oxygen is balanced incorrectly.
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